Throughput and Energy Performance of TCP on a Wideband CDMA Air Interface

In this paper, we present a study on the performance of TCP, in terms of both throughput and energy consumption, in the presence of a Wideband CDMA radio interface typical of third generation wireless systems. The results show that the re- lationship between throughput and average error rate is largely independent of the network load, making it possible to introduce a universal throughput curve, empiri- cally characterized, with gives throughput predictions for each value of the user error probability. Furthermore, the study of the energy efficiency shows the possibility to select an optimal power control threshold to maximize the tradeoff between through- put and energy, thereby potentially achieving very significant energy gains.